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P Bass - 3 ground wires?

Discussion in 'Pickups & Electronics [BG]' started by 707GK, Sep 26, 2020.


  1. 707GK

    707GK

    Jun 13, 2013
    California
    Hi, I'm replacing the pickup in my FGN P Bass, and I see 3 ground wires coming off the tone pot:
    - One goes through the rout and is screwed into the body under the pickup
    - One is screwed into the body in the control cavity
    - One is routed to the bridge

    I know I need the bridge ground, but assuming I'm installing pickups with grounding plates, do I need the other 2 grounds screwed into the body? Most wiring diagrams I've looked at online only show the ground to bridge as well as the plate grounding, or a single ground wire from tone pot to body, via screw.

    Thank you!
     
    Engle likes this.
  2. The screws going into the body are connecting the shielding to the jack ground. It’s not a bad idea to keep them.
     
  3. 707GK

    707GK

    Jun 13, 2013
    California
    Thank you! Will the grounding plates add a redundant ground, and possible noise?
     
  4. dwizum

    dwizum

    Dec 21, 2018
    Likely not, but the good news it will take you about 10 seconds to check (try the bass with that connected vs disconnected) if you're concerned.
     
    Reedt2000 and 707GK like this.
  5. Nope. 'Ground loops' are not a thing in a guitar in spite of talk to the contrary.
     
  6. 707GK

    707GK

    Jun 13, 2013
    California
    Cool, thank you all!!!
     
    Reedt2000 likes this.
  7. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    Yeah, your question has been answered accurately already. If I can add anything at this point it's that cavities are most typically shielded with shielding paint so what looks like a screw shot into wood for no reason, is more than likely making a connection to the paint inside the cavity.

    Now that it's cleared up... pics? Description of new electronics? Come on man, you're making it really hard to live vicariously through you...

    :roflmao:
     
    2tonic, Matt Liebenau and 707GK like this.
  8. 707GK

    707GK

    Jun 13, 2013
    California
    Haha!! Ok here are some teasers:

    4A74C0DD-FC0D-4B5E-A896-EC4CD80DFAAD.jpeg

    FGN seems to do some nice routing work:

    DD21D926-8898-4E46-846F-B6F5C5C29B0B.jpeg

    As mentioned before, looks like black shielding paint:


    3C6FE405-1904-4307-A119-E73C301519C8.jpeg 23C83D47-9FA2-4922-97A0-18AC896006A1.jpeg BA4FC348-3964-478D-A4A3-D5D39A5DC532.jpeg


    More to come soon!
     
    mikeyjm2, ex-tension, 2tonic and 2 others like this.
  9. Reedt2000

    Reedt2000 Supporting Member

    Apr 26, 2017
    Central New Jersey
    Very nice :thumbsup:

    And yes, looks like nice craftsmanship all around. Fully shielded, clean routes, great wood selection, solid looking bridge. How does it play? Is the fretwork good? I've seen this brand here on TB but never in person.
     
    2tonic and 707GK like this.
  10. As already mentioned, hook up the brass plate and all the shielding then, if something sounds funny, take the 10 minutes to remove the brass plate and see what happens.
     
    707GK likes this.
  11. 707GK

    707GK

    Jun 13, 2013
    California
    Oh the fretwork is incredible, best I've played. I prefer this neck over my EBMM Sterling and my American Pro Jazz. No uneven spots, super smooth, no buzzing. Super comfortable. They start everything with CNC but finish everything by hand still, and it shows.

    My only complaint is the electronics, but that's not a hard thing to fix. The solder on the output jack was pretty weak and I had to resolder, and the pickup isn't awful but isn't amazing. Comparable to one of the Chinese Squier Classic Vibes. So I'll be adding something with a bit more in the low end. Just need to finish up a last-minute errand request before popping the new one in there. The volume and tone pots are nice though, very smooth and not much resistance, easy to turn.

    Thanks again for the help!
     
    2tonic, Reedt2000 and dwizum like this.
  12. 707GK

    707GK

    Jun 13, 2013
    California
    Oh no! What’s it mean when the D and G strings are significantly muted compared to E and A? ( sounds amazing on E and A)
     
  13. Hmm. Is that half too low maybe? Too much distance to the strings?
     
  14. 707GK

    707GK

    Jun 13, 2013
    California
    Not that, in fact they are closer to the strings.

    it sounds like the tone and volume are at 100% on the E and A, but 75% on D and G. Somethings missing. In fact they sound like completely different pickups.
     
  15. See if you can get an idea of the magnet strength, one half vs the other. Stick a screwdriver to one half and see how much 'stick' there is compared to the other half. Very strange.
     
    Reedt2000 likes this.
  16. 707GK

    707GK

    Jun 13, 2013
    California
    Magnets all seem very strong, same as the stock pickups. Well, bummer! Can’t work on it anymore today, gotta resume some other time.

    Thanks!
     
  17. ok, I think you'll have to remove them and measure resistance, one half vs the other. They should read about the same and I'll bet they don't.
     
    Reedt2000 and 707GK like this.
  18. 707GK

    707GK

    Jun 13, 2013
    California
    And if they don’t, defective or anything I can do about it?
     
  19. If they don't, they don't have the same number of turns of wire. Defective.
     
    2tonic, Reedt2000 and 707GK like this.
  20. 707GK

    707GK

    Jun 13, 2013
    California
    Ok, thank you!!!
     
    Reedt2000 likes this.

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